Labarai - Canjin makamashi a eriyar radar

A cikin da'irori ko tsarin microwave gabaɗayan kewayawa ko tsarin galibi suna haɗa da na'urori masu mahimmanci na microwave kamar filtata, ma'aurata, masu rarraba wutar lantarki, da sauransu. wani tare da ƙarancin hasara;

A cikin dukkan tsarin radar abin hawa, canjin makamashi ya ƙunshi canja wurin makamashi daga guntu zuwa mai ciyarwa akan allon PCB, canja wurin mai ciyarwa zuwa jikin eriya, da ingantaccen hasken makamashi ta eriya. A cikin dukkan tsarin canja wurin makamashi, muhimmin sashi shine ƙirar mai canzawa. Masu juyawa a cikin tsarin raƙuman ruwa na millimita galibi sun haɗa da microstrip zuwa juzu'in haɗaɗɗen raƙuman raƙuman ruwa (SIW), jujjuyawar microstrip zuwa juyawa waveguide, SIW zuwa canjin waveguide, jujjuyawar raƙuman ruwa zuwa waveguide, juyawar waveguide zuwa juyawa waveguide da nau'ikan juyawar waveguide daban-daban. Wannan fitowar za ta mayar da hankali ga ƙirar microband SIW.

Daban-daban na tsarin sufuri

Microstripyana ɗaya daga cikin tsarin jagorar da aka fi amfani dashi a ƙananan mitocin microwave. Babban fa'idodinsa shine tsari mai sauƙi, ƙarancin farashi da babban haɗin kai tare da abubuwan hawan saman saman. An kafa layin microstrip na yau da kullun ta hanyar amfani da masu gudanarwa a gefe ɗaya na wani yanki na dielectric Layer, yana samar da jirgin sama guda ɗaya a ɗayan gefen, tare da iska sama da shi. Babban madugu a zahiri abu ne mai ɗaukar nauyi (yawanci jan ƙarfe) wanda aka siffata zuwa kunkuntar waya. Faɗin layi, kauri, izinin dangi, da tangent ɗin asarar wutan lantarki sune mahimman sigogi. Bugu da ƙari, kaurin madugu (watau kauri na ƙarfe) da kuma tafiyar da mai gudanarwa suma suna da mahimmanci a mafi girman mitoci. Ta hanyar yin la'akari da waɗannan sigogi a hankali da yin amfani da layin microstrip a matsayin naúrar asali don wasu na'urori, yawancin na'urorin microwave da aka buga za a iya tsara su, kamar masu tacewa, ma'aurata, masu rarraba wutar lantarki / masu haɗawa, masu haɗawa, da dai sauransu. Duk da haka yayin da mita ya karu (lokacin motsi zuwa). in mun gwada manyan mitoci na microwave) asarar watsawa yana ƙaruwa kuma radiation yana faruwa. Don haka, an fi son jagororin raƙuman bututu irin su rectangular waveguides saboda ƙananan asara a mitoci masu girma (babu radiation). Ciki na waveguide yawanci iska ne. Amma idan ana so, ana iya cika shi da kayan dielectric, yana ba shi ƙaramin giciye fiye da mai cike da iskar gas. Koyaya, raƙuman bututun raƙuman ruwa galibi suna da girma, na iya yin nauyi musamman a ƙananan mitoci, suna buƙatar buƙatun masana'antu mafi girma kuma suna da tsada, kuma ba za'a iya haɗa su da tsarin bugu na tsari ba.

RFMISO MICROSTRIP ANTENNA KAYAN:

RM-MA25527-22,25.5-27GHz

RM-MA425435-22,4.25-4.35GHz

Ɗayan shine tsarin jagoranci na matasan tsakanin tsarin microstrip da mai jagorar igiyar ruwa, wanda ake kira substrate hadedde waveguide (SIW). SIW wani tsari ne mai haɗaɗɗun raƙuman ruwa wanda aka ƙirƙira akan kayan wutan lantarki, tare da masu gudanarwa a sama da ƙasa da jeri na layi na ƙarfe biyu ta hanyar bangon gefe. Idan aka kwatanta da microstrip da tsarin jagorar igiyar ruwa, SIW yana da tsada-tsari, yana da tsarin masana'anta mai sauƙi, kuma ana iya haɗa shi da na'urori masu tsari. Bugu da kari, da yi a high mitoci ne mafi alhẽri daga na microstrip Tsarin kuma yana da waveguide watsa Properties. Kamar yadda aka nuna a hoto na 1;

Jagorar ƙirar SIW

Haɗe-haɗe-haɗe-haɗen jagororin raƙuman ruwa (SIWs) haɗaɗɗun sifofi masu kama da waveguide waɗanda aka ƙirƙira ta amfani da layuka biyu na ƙarfe ta hanyar da aka saka a cikin injin dielectric mai haɗa faranti guda biyu na ƙarfe. Layukan karfe ta ramuka suna samar da bangon gefe. Wannan tsarin yana da halaye na layin microstrip da waveguides. Tsarin masana'anta kuma yayi kama da sauran sifofin lebur da aka buga. Ana nuna nau'in lissafi na SIW na yau da kullun a cikin Hoto 2.1, inda fadinsa (watau rabuwa tsakanin vias a gefen gefe (as)), ana amfani da diamita na vias (d) da tsayin farar (p) don tsara tsarin SIW. Mafi mahimmancin sigogi na geometric (wanda aka nuna a cikin Hoto 2.1) za a bayyana a cikin sashe na gaba. Lura cewa yanayin da ya fi kowa shine TE10, kamar madaidaicin raƙuman ruwa. Dangantakar da ke tsakanin mitar yanke fc na jagororin raƙuman ruwa mai cike da iska (AFWG) da masu cike da wutar lantarki (DFWG) da girma a da b shine farkon batu na ƙirar SIW. Don jagororin raƙuman ruwa mai cike da iska, mitar yanke yana kamar yadda aka nuna a cikin dabarar da ke ƙasa

Tsarin asali na SIW da dabarar lissafi[1]

inda c shine gudun haske a sarari kyauta, m da n sune hanyoyin, a shine mafi tsayin girman jagorar igiyar ruwa, kuma b shine guntun girman jagorar igiyar ruwa. Lokacin da waveguide ke aiki a yanayin TE10, ana iya sauƙaƙe shi zuwa fc=c/2a; lokacin da waveguide ya cika da dielectric, da wideside tsawon a ana lissafta ta ad=a/Sqrt(εr), inda εr ne dielectric akai na matsakaici; Domin yin SIW aiki a yanayin TE10, ta hanyar rami tazarar p, diamita d da faffadan gefe kamar yadda yakamata ya gamsar da dabarar da ke saman dama na hoton da ke ƙasa, kuma akwai ma ƙayyadaddun ƙa'idodi na d<λg da p <2d [ 2]; ku.

inda λg shine jagoran raƙuman raƙuman raƙuman ruwa: A lokaci guda, kauri daga cikin substrate ba zai shafi ƙirar girman SIW ba, amma zai shafi asarar tsarin, don haka ya kamata a yi la'akari da ƙananan hasara na ƙananan kauri. .

Microstrip zuwa canza SIW
Lokacin da tsarin microstrip yana buƙatar haɗawa da SIW, canjin microstrip ɗin da aka ɗora yana ɗaya daga cikin manyan hanyoyin miƙa mulki da aka fi so, kuma sauyin da aka ɗora yawanci yana ba da wasan watsa shirye-shirye idan aka kwatanta da sauran sauye-sauyen da aka buga. Tsarin gyare-gyaren da aka ƙera yana da ƙananan tunani, kuma asarar shigar da aka samu ta farko ta haifar da asarar dielectric da mai gudanarwa. Zaɓin kayan aikin ƙasa da kayan jagora yana ƙayyade asarar canji. Tun da kauri daga cikin substrate yana hana nisa na layin microstrip, ya kamata a daidaita ma'auni na sauye-sauyen gyare-gyare lokacin da kauri ya canza. Wani nau'in madaidaicin coplanar waveguide (GCPW) kuma tsarin layin watsawa ne da ake amfani da shi sosai a cikin manyan mitoci. Masu jagoranci na gefen da ke kusa da layin watsa tsaka-tsakin kuma suna aiki azaman ƙasa. Ta hanyar daidaita nisa na babban mai ba da abinci da rata zuwa ƙasan gefe, ana iya samun madaidaicin halayen da ake buƙata.

Microstrip zuwa SIW da GCPW zuwa SIW

Hoton da ke ƙasa misali ne na ƙirar microstrip zuwa SIW. Matsakaicin da aka yi amfani da shi shine Rogers3003, dielectric akai-akai shine 3.0, ƙimar asarar gaskiya shine 0.001, kuma kauri shine 0.127mm. Faɗin mai ciyarwa a ƙarshen biyu shine 0.28mm, wanda yayi daidai da faɗin mai ciyarwar eriya. Diamita ta rami shine d=0.4mm, da tazarar p=0.6mm. Girman simintin shine 50mm * 12mm * 0.127mm. Asara gabaɗaya a cikin lambar wucewa ta kusan 1.5dB (wanda za'a iya ƙara ragewa ta haɓaka tazara mai faɗin gefe).